function GetXmlHttpObject(handler)
{ 
var objXMLHttp=null
if (window.XMLHttpRequest)
{
objXMLHttp=new XMLHttpRequest()
}
else if (window.ActiveXObject)
{
objXMLHttp=new ActiveXObject("Microsoft.XMLHTTP")
}
return objXMLHttp
}



 //trim function
 String.prototype.trim = function () {
    return this.replace(/^\s*/, "").replace(/\s*$/, "");
		}
		
		
//Sql Injection Input Validation

function chkdata(val)
{
var checkOK = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789/@:. ";
//var checkStr = window.document.form1.frefno.value;
//var chkstr="ABCDE"
var checkStr = val;
var allValid = true;
var bcnt=0
for (i = 0;  i < checkStr.length;  i++)
{
	ch = checkStr.charAt(i);
    	for (j = 0;  j < checkOK.length;  j++)
	{
      	if (ch==" ")
        		bcnt+=1;
      	if (ch == checkOK.charAt(j))
        	break;
	}
    	if (j == checkOK.length)
    	{
      	allValid = false;
      	break;
    	}
}
if (!allValid )
{
	//alert("Please enter only letter, digit and whitespace characters in the \"File No\" field.");
    	//window.document.form1.frefno.focus();
    	return (false);
}
else
{
 	//window.document.form1.submit();
 	return true;
}
}