function show(div_id,hide1,hide2)
	{
		document.getElementById(div_id).style.display='block';
        if(hide1!='')
        {
		  document.getElementById(hide1).style.display='none';
        }
        if(hide2!='')
        {
    		document.getElementById(hide2).style.display='none';            
        }
	}
	function update_buy(value)
	{
		if(value=='buy_p10_120')
		{
			document.getElementById('p10_120').style.display='block';
			document.getElementById('p10_60').style.display='none';
			document.getElementById('p10_30').style.display='none';
			document.getElementById('p10_6').style.display='none';
			document.getElementById('p10').src='images/store/10_120.jpg';
		}
		else if(value=='buy_p10_60')
		{
			document.getElementById('p10_120').style.display='none';
			document.getElementById('p10_60').style.display='block';
			document.getElementById('p10_30').style.display='none';
			document.getElementById('p10_6').style.display='none';
			document.getElementById('p10').src='images/store/10_60.jpg';
		}
		else if(value=='buy_p10_30')
		{
			document.getElementById('p10_120').style.display='none';
			document.getElementById('p10_60').style.display='none';
			document.getElementById('p10_30').style.display='block';
			document.getElementById('p10_6').style.display='none';
			document.getElementById('p10').src='images/store/10_30.jpg';
		}
		else if(value=='buy_p10_6')
		{
			document.getElementById('p10_120').style.display='none';
			document.getElementById('p10_60').style.display='none';
			document.getElementById('p10_30').style.display='none';
			document.getElementById('p10_6').style.display='block';
			document.getElementById('p10').src='images/store/10_6.jpg';
		}

		else if(value=='buy_p13_120')
		{
			document.getElementById('p13_120').style.display='block';
			document.getElementById('p13_60').style.display='none';
			document.getElementById('p13_30').style.display='none';
			document.getElementById('p13_6').style.display='none';
			document.getElementById('p13').src='images/store/13_120.jpg';
		}
		else if(value=='buy_p13_60')
		{
			document.getElementById('p13_120').style.display='none';
			document.getElementById('p13_60').style.display='block';
			document.getElementById('p13_30').style.display='none';
			document.getElementById('p13_6').style.display='none';
			document.getElementById('p13').src='images/store/13_60.jpg';
		}
		else if(value=='buy_p13_30')
		{
			document.getElementById('p13_120').style.display='none';
			document.getElementById('p13_60').style.display='none';
			document.getElementById('p13_30').style.display='block';
			document.getElementById('p13_6').style.display='none';
			document.getElementById('p13').src='images/store/13_30.jpg';
		}
		else if(value=='buy_p13_6')
		{
			document.getElementById('p13_120').style.display='none';
			document.getElementById('p13_60').style.display='none';
			document.getElementById('p13_30').style.display='none';
			document.getElementById('p13_6').style.display='block';
			document.getElementById('p13').src='images/store/13_6.jpg';
		}

		else if(value=='buy_p312_120')
		{
			document.getElementById('p312_120').style.display='block';
			document.getElementById('p312_60').style.display='none';
			document.getElementById('p312_30').style.display='none';
			document.getElementById('p312_6').style.display='none';
			document.getElementById('p312').src='images/store/312_120.jpg';
		}
		else if(value=='buy_p312_60')
		{
			document.getElementById('p312_120').style.display='none';
			document.getElementById('p312_60').style.display='block';
			document.getElementById('p312_30').style.display='none';
			document.getElementById('p312_6').style.display='none';
			document.getElementById('p312').src='images/store/312_60.jpg';
		}
		else if(value=='buy_p312_30')
		{
			document.getElementById('p312_120').style.display='none';
			document.getElementById('p312_60').style.display='none';
			document.getElementById('p312_30').style.display='block';
			document.getElementById('p312_6').style.display='none';
			document.getElementById('p312').src='images/store/312_30.jpg';
		}
		else if(value=='buy_p312_6')
		{
			document.getElementById('p312_120').style.display='none';
			document.getElementById('p312_60').style.display='none';
			document.getElementById('p312_30').style.display='none';
			document.getElementById('p312_6').style.display='block';
			document.getElementById('p312').src='images/store/312_6.jpg';
		}

		else if(value=='buy_p675_120')
		{
			document.getElementById('p675_120').style.display='block';
			document.getElementById('p675_60').style.display='none';
			document.getElementById('p675_30').style.display='none';
			document.getElementById('p675_6').style.display='none';
			document.getElementById('p675').src='images/store/675_120.jpg';
		}
		else if(value=='buy_p675_60')
		{
			document.getElementById('p675_120').style.display='none';
			document.getElementById('p675_60').style.display='block';
			document.getElementById('p675_30').style.display='none';
			document.getElementById('p675_6').style.display='none';
			document.getElementById('p675').src='images/store/675_60.jpg';
		}
		else if(value=='buy_p675_30')
		{
			document.getElementById('p675_120').style.display='none';
			document.getElementById('p675_60').style.display='none';
			document.getElementById('p675_30').style.display='block';
			document.getElementById('p675_6').style.display='none';
			document.getElementById('p675').src='images/store/675_30.jpg';
		}
		else if(value=='buy_p675_6')
		{
			document.getElementById('p675_120').style.display='none';
			document.getElementById('p675_60').style.display='none';
			document.getElementById('p675_30').style.display='none';
			document.getElementById('p675_6').style.display='block';
			document.getElementById('p675').src='images/store/675_6.jpg';
		}
        
        else if(value=='buy_m10_4')
		{
			document.getElementById('m10_4').style.display='block';
			document.getElementById('m10_8').style.display='none';
			document.getElementById('m10_16').style.display='none';
			document.getElementById('m10_48').style.display='none';
			document.getElementById('m10').src='images/store/6-10-10/mercury_free_10_4.jpg';
		}
		else if(value=='buy_m10_8')
		{
			document.getElementById('m10_4').style.display='none';
			document.getElementById('m10_8').style.display='block';
			document.getElementById('m10_16').style.display='none';
			document.getElementById('m10_48').style.display='none';
			document.getElementById('m10').src='images/store/6-10-10/mercury_free_10_8.jpg';
		}
		else if(value=='buy_m10_16')
		{
			document.getElementById('m10_4').style.display='none';
			document.getElementById('m10_8').style.display='none';
			document.getElementById('m10_16').style.display='block';
			document.getElementById('m10_48').style.display='none';
			document.getElementById('m10').src='images/store/6-10-10/mercury_free_10_16.jpg';
		}
		else if(value=='buy_m10_48')
		{
			document.getElementById('m10_4').style.display='none';
			document.getElementById('m10_8').style.display='none';
			document.getElementById('m10_16').style.display='none';
			document.getElementById('m10_48').style.display='block';
			document.getElementById('m10').src='images/store/6-10-10/mercury_free_10_48.jpg';
		}
        
        else if(value=='buy_m13_4')
		{
			document.getElementById('m13_4').style.display='block';
			document.getElementById('m13_8').style.display='none';
			document.getElementById('m13_16').style.display='none';
			document.getElementById('m13_48').style.display='none';
			document.getElementById('m13').src='images/store/6-10-10/mercury_free_13_4.jpg';
		}
		else if(value=='buy_m13_8')
		{
			document.getElementById('m13_4').style.display='none';
			document.getElementById('m13_8').style.display='block';
			document.getElementById('m13_16').style.display='none';
			document.getElementById('m13_48').style.display='none';
			document.getElementById('m13').src='images/store/6-10-10/mercury_free_13_8.jpg';
		}
		else if(value=='buy_m13_16')
		{
			document.getElementById('m13_4').style.display='none';
			document.getElementById('m13_8').style.display='none';
			document.getElementById('m13_16').style.display='block';
			document.getElementById('m13_48').style.display='none';
			document.getElementById('m13').src='images/store/6-10-10/mercury_free_13_16.jpg';
		}
		else if(value=='buy_m13_48')
		{
			document.getElementById('m13_4').style.display='none';
			document.getElementById('m13_8').style.display='none';
			document.getElementById('m13_16').style.display='none';
			document.getElementById('m13_48').style.display='block';
			document.getElementById('m13').src='images/store/6-10-10/mercury_free_13_48.jpg';
		}
        
        else if(value=='buy_m312_4')
		{
			document.getElementById('m312_4').style.display='block';
			document.getElementById('m312_8').style.display='none';
			document.getElementById('m312_16').style.display='none';
			document.getElementById('m312_48').style.display='none';
			document.getElementById('m312').src='images/store/6-10-10/mercury_free_312_4.jpg';
		}
		else if(value=='buy_m312_8')
		{
			document.getElementById('m312_4').style.display='none';
			document.getElementById('m312_8').style.display='block';
			document.getElementById('m312_16').style.display='none';
			document.getElementById('m312_48').style.display='none';
			document.getElementById('m312').src='images/store/6-10-10/mercury_free_312_8.jpg';
		}
		else if(value=='buy_m312_16')
		{
			document.getElementById('m312_4').style.display='none';
			document.getElementById('m312_8').style.display='none';
			document.getElementById('m312_16').style.display='block';
			document.getElementById('m312_48').style.display='none';
			document.getElementById('m312').src='images/store/6-10-10/mercury_free_312_16.jpg';
		}
		else if(value=='buy_m312_48')
		{
			document.getElementById('m312_4').style.display='none';
			document.getElementById('m312_8').style.display='none';
			document.getElementById('m312_16').style.display='none';
			document.getElementById('m312_48').style.display='block';
			document.getElementById('m312').src='images/store/6-10-10/mercury_free_312_48.jpg';
		}
        
        else if(value=='buy_r10_4')
		{
			document.getElementById('r10_4').style.display='block';
			document.getElementById('r10_8').style.display='none';
			document.getElementById('r10_16').style.display='none';
			document.getElementById('r10_48').style.display='none';
			document.getElementById('r10').src='images/store/6-10-10/proline_10_4.png';
		}
		else if(value=='buy_r10_8')
		{
			document.getElementById('r10_4').style.display='none';
			document.getElementById('r10_8').style.display='block';
			document.getElementById('r10_16').style.display='none';
			document.getElementById('r10_48').style.display='none';
			document.getElementById('r10').src='images/store/6-10-10/proline_10_8.png';
		}
		else if(value=='buy_r10_16')
		{
			document.getElementById('r10_4').style.display='none';
			document.getElementById('r10_8').style.display='none';
			document.getElementById('r10_16').style.display='block';
			document.getElementById('r10_48').style.display='none';
			document.getElementById('r10').src='images/store/6-10-10/proline_10_16.png';
		}
		else if(value=='buy_r10_48')
		{
			document.getElementById('r10_4').style.display='none';
			document.getElementById('r10_8').style.display='none';
			document.getElementById('r10_16').style.display='none';
			document.getElementById('r10_48').style.display='block';
			document.getElementById('r10').src='images/store/6-10-10/proline_10_48.png';
		}
        
        else if(value=='buy_r13_4')
		{
			document.getElementById('r13_4').style.display='block';
			document.getElementById('r13_8').style.display='none';
			document.getElementById('r13_16').style.display='none';
			document.getElementById('r13_48').style.display='none';
			document.getElementById('r13').src='images/store/6-10-10/proline_13_4.png';
		}
		else if(value=='buy_r13_8')
		{
			document.getElementById('r13_4').style.display='none';
			document.getElementById('r13_8').style.display='block';
			document.getElementById('r13_16').style.display='none';
			document.getElementById('r13_48').style.display='none';
			document.getElementById('r13').src='images/store/6-10-10/proline_13_8.png';
		}
		else if(value=='buy_r13_16')
		{
			document.getElementById('r13_4').style.display='none';
			document.getElementById('r13_8').style.display='none';
			document.getElementById('r13_16').style.display='block';
			document.getElementById('r13_48').style.display='none';
			document.getElementById('r13').src='images/store/6-10-10/proline_13_16.png';
		}
		else if(value=='buy_r13_48')
		{
			document.getElementById('r13_4').style.display='none';
			document.getElementById('r13_8').style.display='none';
			document.getElementById('r13_16').style.display='none';
			document.getElementById('r13_48').style.display='block';
			document.getElementById('r13').src='images/store/6-10-10/proline_13_48.png';
		}
        
        else if(value=='buy_r312_4')
		{
			document.getElementById('r312_4').style.display='block';
			document.getElementById('r312_8').style.display='none';
			document.getElementById('r312_48').style.display='none';
			document.getElementById('r312').src='images/store/6-10-10/proline_312_4.png';
		}
		else if(value=='buy_r312_8')
		{
			document.getElementById('r312_4').style.display='none';
			document.getElementById('r312_8').style.display='block';
			document.getElementById('r312_48').style.display='none';
			document.getElementById('r312').src='images/store/6-10-10/proline_312_8.png';
		}
		else if(value=='buy_r312_48')
		{
			document.getElementById('r312_4').style.display='none';
			document.getElementById('r312_8').style.display='none';
			document.getElementById('r312_48').style.display='block';
			document.getElementById('r312').src='images/store/6-10-10/proline_312_48.png';
		}
        
        else if(value=='buy_r675_4')
		{
			document.getElementById('r675_4').style.display='block';
			document.getElementById('r675_8').style.display='none';
            document.getElementById('r675_16').style.display='none';
            document.getElementById('r675_48').style.display='none';
			document.getElementById('r675').src='images/store/6-10-10/proline_675_4.png';
		}
		else if(value=='buy_r675_8')
		{
			document.getElementById('r675_4').style.display='none';
			document.getElementById('r675_8').style.display='block';
            document.getElementById('r675_16').style.display='none';
            document.getElementById('r675_48').style.display='none';
			document.getElementById('r675').src='images/store/6-10-10/proline_675_8.png';
		}
		else if(value=='buy_r675_16')
		{
			document.getElementById('r675_4').style.display='none';
			document.getElementById('r675_8').style.display='none';
            document.getElementById('r675_16').style.display='block';
            document.getElementById('r675_48').style.display='none';
			document.getElementById('r675').src='images/store/6-10-10/proline_675_8.png';
		}
		else if(value=='buy_r675_48')
		{
			document.getElementById('r675_4').style.display='none';
			document.getElementById('r675_8').style.display='none';
            document.getElementById('r675_16').style.display='none';
            document.getElementById('r675_48').style.display='block';
			document.getElementById('r675').src='images/store/6-10-10/proline_675_8.png';
		}
	}
	function reset_form()
	{
		document.getElementById('p10_form').reset();
		document.getElementById('p13_form').reset();
		document.getElementById('p312_form').reset();
		document.getElementById('p675_form').reset();
  		document.getElementById('m10_form').reset();
		document.getElementById('m13_form').reset();
		document.getElementById('m312_form').reset();
   		document.getElementById('r10_form').reset();
		document.getElementById('r13_form').reset();
		document.getElementById('r312_form').reset();
		document.getElementById('r675_form').reset();
		// counter
	    var i = 0;


	     // create object
	    imageObj = new Image();
	     // set image list
	    images = new Array();
	    images[0]="images/store/312_6.jpg";
	    images[1]="images/store/312_30.jpg";
	    images[2]="images/store/312_60.jpg";
	    images[3]="images/store/312_120.jpg";
	    images[4]="images/store/13_6.jpg";
	    images[5]="images/store/13_30.jpg";
	    images[6]="images/store/13_60.jpg";
	    images[7]="images/store/13_120.jpg";
	    images[8]="images/store/10_6.jpg";
	    images[9]="images/store/10_60.jpg";
	    images[10]="images/store/675_6.jpg";
	    images[11]="images/store/675_30.jpg";
	    images[12]="images/store/675_60.jpg";
	    images[13]="images/store/675_120.jpg";
	    images[14]="images/store/10_120.jpg";
	    images[15]="images/store/10_30.jpg";
	     // start preloading
	    for(i=0; i<=15; i++) 
	    {
	         imageObj.src=images[i];
	    }
	}