function emailcheck(str){
	var at="@"
	var dot="."
	var lat=str.indexOf(at)
	var lstr=str.length
	var ldot=str.indexOf(dot)
	
	if (str.indexOf(at)==-1){
	   alert("Invalid Email Address")
	   return false
	}
	if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
	   alert("Invalid Email Address")
	   return false
	}
	if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		alert("Invalid Email Address")
		return false
	}
	if (str.indexOf(at,(lat+1))!=-1){
		alert("Invalid Email Address")
		return false
	}
	if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		alert("Invalid Email Address")
		return false
	}
	if (str.indexOf(dot,(lat+2))==-1){
		alert("Invalid Email Address")
		return false
	}
	if (str.indexOf(" ")!=-1){
		alert("Invalid Email Address")
		return false
	}
	return true
}

function ValidateForm(){
	var emailID=document.getElementById("email")
	
	if ((emailID.value==null)||(emailID.value=="")){
		alert("Please Enter Your Email Address")
		emailID.focus()
		return false
	}
	if (emailcheck(emailID.value)==false){
		emailID.value=""
		emailID.focus()
		return false
	}
	return true
}

function setFormFields() {
	var getline = document.URL.substring(document.URL.indexOf('?')+1);
	var args=getline.split('&');
	for(var i=0;i<args.length;i++) {
		var keyVal=args[i].split('=');
		if( keyVal[0].indexOf('set') == 0 )
			setField(keyVal[0].substring(3), keyVal[1]);
	}
}

function setField(arg, val){
	var field=document.getElementById(arg);
	if(field && arg && val){
		switch(field.type){
		case 'text':
			val=val.replace(/\+/ig," ");
			field.value=val;
			break;
		case 'select-one':
			for(var j=0;j<field.length;j++)
				if (field.options[j].value == val)
					field.selectedIndex=j;
			break;
		}
	}
}