function subHover() {
		var liEls = document.getElementById("nav").getElementsByTagName("li");
		
		for(var i=0; i<liEls.length; i++) {
			if(liEls[i].id == "mainNav") {
				liEls[i].onmouseover=function() { this.className+="subHover"; }
				liEls[i].onmouseout=function() { this.className=this.className.replace(new RegExp("subHover\\b"), ""); }
			}
		}
	}
	if(window.attachEvent) {
		window.attachEvent("onload", subHover);
	} else if(window.addEventListener) {
		window.addEventListener("onload", subHover, false);
	}
	
	function validate(){

	var error = "";
	
	if(document.myform.video.value == ""){
		
		error = error + "Please select a video to upload.";
	}
	if(document.myform.description.value == ""){
	
		error = error + "\nPlease enter a description.";
	
	}
	else{
		var newFile =document.myform.video.value ;
		var pos1 = newFile.lastIndexOf('\\');
		var tempStr = newFile.substr(pos1 + 1);
		// check file extension
		var pos2 = tempStr.lastIndexOf('.');
		var extStr = tempStr.slice(pos2 + 1,tempStr.length);
		if (extStr == "gif" || extStr == "jpg" || extStr == "jpeg" || extStr == "mpg" || extStr == "avi" || extStr == "mov" || extStr == "wmv" || extStr == "asf" || extStr == "dv")
		{
			// check for dashes
			if (tempStr.indexOf('-') > 0)
			{			
				alert ("The file name can not contain any dashes (-).\n\nPlease rename your file and try uploading again.");
				return false;
			}
		}
		else{
			alert ("The file has the wrong extention.");
			return false;
		}
	}		
	if(error != ""){
		alert(error);
		return false;	
	}
	else{
		processWin = window.open('pop_process.html', 'process', 'width=350, height=150');	
		return true;
	}
	
}