function changeimage1()
	{
	    document.getElementById("ctl00$ContentPlaceHolder1$imgproduct").src="images/best_sellingitems_1.jpg"
	}
	function changeimage2()
	{
	    document.getElementById("ctl00$ContentPlaceHolder1$imgproduct").src="images/best_sellingitems_2.jpg"
	}
	function changeimage3()
	{
	    document.getElementById("ctl00$ContentPlaceHolder1$imgproduct").src="images/best_sellingitems_3.jpg"
	}
	function checkSearchvalue()
	{
	    if(document.getElementById("ctl00$txtSearch").value=="")
	    {
	        alert("Please enter value for serach");
	        document.getElementById("ctl00$txtSearch").focus();
	        return false;
	    }
	    return true;
	}

function NumericOnly(e) 
{
// returns true if A-Z, a-z or ' or BS hit or browser isn't IE or NS, otherwise false

    var nKey = -1;

    if (e && e.which) 
		nKey = e.which; 

	// NS4 & NS6
    else if (window.event && window.event.keyCode) 
	nKey =window.event.keyCode; 
	// IE

    // 97 = a, 122 = z, 65 = A, 90 = Z, 45 = -, 8 = BS
    return (nKey > -1 ? ((nKey > 47 && nKey < 58) ||  nKey == 46 ||  nKey == 45 ||  nKey == 44) : true);
} 


function NumericOnlyN(e) 
{
// returns true if A-Z, a-z or ' or BS hit or browser isn't IE or NS, otherwise false

    var nKey = -1;

    if (e && e.which) 
		nKey = e.which; 

	// NS4 & NS6
    else if (window.event && window.event.keyCode) 
	nKey =window.event.keyCode; 
	// IE

    // 97 = a, 122 = z, 65 = A, 90 = Z, 45 = -, 8 = BS
    return (nKey > -1 ? ((nKey > 47 && nKey < 58)) : true);
} 


////function associateField(e) 
////{
////    alert(e.keycode);
//// // field = (typeof(field) == "string") ? document.getElementById(field) : field;
////  //buttonName = buttonName || field.name + "_button";
//// // return function(e) {
////    if (e.keyCode == 13) {
////    alert(e.keycode);
////      this.form.elements[lnkGo].click();
////      return false;
////    }
////    return true;
////}