function loadImage(imageName, targetId){
	var target = document.getElementById(targetId);
	target.src="images/" + imageName;
}

function validateMail(){
	var form = document.forms.frmEmail;
	var from = document.getElementById("from");
	var subject = document.getElementById("subject");
	var msgbody = document.getElementById("msgbody");
	
	if(echeck(from.value)==false){
		from.focus();
		return;
	}
	if(subject.value == "" || subject.value == null){
		alert("You must enter a subject for the e-mail");
		subject.focus();
		return;
	}
	if(msgbody.value == "" || msgbody.value == null){
		alert("You must enter a message to send in the e-mail");
		msgbody.focus();
		return;
	}
	form.submit();
}

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){
		   alert("Invalid E-mail ID")
		   return false
		}

		if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
		   alert("Invalid E-mail ID")
		   return false
		}

		if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		    alert("Invalid E-mail ID")
		    return false
		}

		 if (str.indexOf(at,(lat+1))!=-1){
		    alert("Invalid E-mail ID")
		    return false
		 }

		 if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		    alert("Invalid E-mail ID")
		    return false
		 }

		 if (str.indexOf(dot,(lat+2))==-1){
		    alert("Invalid E-mail ID")
		    return false
		 }
		
		 if (str.indexOf(" ")!=-1){
		    alert("Invalid E-mail ID")
		    return false
		 }

 		 return true					
	}