//datepicker
function checkdate(docform){
	var fdate = "";
	for(var i=0;i<docform.elements.length;i++){
		if(docform.elements[i].name.substring(0,9) == "dtDateDay"){
			var d = docform.elements[i].value;
			var m = docform.elements[i+1].value;
			var y = parseInt(docform.elements[i+2].value);
			if(y < 2000) y = y<80?y+2000:y+1900;
			var febdays = y%400==0?29:y%100==0?28:y%4==0?29:28;
			var monthdays = new Array(31,febdays,31,30,31,30,31,31,30,31,30,31);
			if(d=="00" || m=="00" || y=="" || monthdays[m-1]<d){
				alert("Invalid date");
				docform.elements[i].focus();
				return(false);
			};
			continue;
		};
	};
	return(true);
};

function checklength(num){
	num = num.toString()+"";
	if(num.length == 1) num = "0" + num;return(num);
};