function LTrim( value ) {
	
	var re = /\s*((\S+\s*)*)/;
	return value.replace(re, "$1");
	
}
function echeck(str) {
	var at="@"
	var dot="."
	var lat=str.indexOf(at)
	var lstr=str.length
	var ldot=str.indexOf(dot)
	if (str.indexOf(at)==-1){
	   return false
	}
	if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
	   return false
	}
	if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		return false
	}
	if (str.indexOf(at,(lat+1))!=-1){
		return false
	}
	if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		return false
	}
	if (str.indexOf(dot,(lat+2))==-1){
		return false
	}
	if (str.indexOf(" ")!=-1){
		return false
	}
	return true					
}
function chkContact() {
	var obj = document.contact;
	if(LTrim(obj.name.value) == "") {
		alert("Name field can not be blank.");
		obj.name.focus();
		return false;
	} else if(LTrim(obj.dept.value) == "") {
		alert("Please select one department.");
		obj.dept.focus();
		return false;	
	} else if(LTrim(obj.email.value) == "") {
		alert("Email field can not be blank.");
		obj.email.focus();
		return false;	
	} else if(echeck(obj.email.value) == false) {
		alert("Please give a valid email address.");
		obj.email.focus();
		return false;		
	} else if(LTrim(obj.url.value) == "") {
		alert("Please give URL of the site.");
		obj.url.focus();
		return false;		
	} else if(LTrim(obj.msg.value) == "") {
		alert("Please give message here.");
		obj.msg.focus();
		return false;		
	} else {
		window.location = "pepsi.php?opt=add";
	}
}