function validate()
{

		
		if(document.getElementById("ProbType").selectedIndex==0)
		{
			alert("Select Problem Type");
			return false;
		
		}

		if (document.getElementById("UserName").value == "")
		{
			alert("Enter User Name");
			return false;
			
		}
			
		if(document.getElementById("email_id").value=="")
		{
			alert("Enter Email address");
			return false;
			 			
		}

		if (document.getElementById("SupportDetails").value == "")
		{
			alert("Enter detail");
			return false;
		}
				
		if(document.getElementById("email_id").value!="")
		{
			if(emailCheck())
			{
				return true;
			}
			else
			{
				return false;
			
			}
				
		}
		
						
		
}//validate


function emailCheck() 
{    

		var emailStr=document.getElementById("email_id").value;
		var emailPat=/^(.+)@(.+)$/
		var specialChars="\\(\\)<>@,;:\\\\\\\"\\.\\[\\]"
		var validChars="\[^\\s" + specialChars + "\]"    
		var quotedUser="(\"[^\"]*\")"

		var ipDomainPat=/^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/

		var atom=validChars + '+'

		var word="(" + atom + "|" + quotedUser + ")"

		var userPat=new RegExp("^" + word + "(\\." + word + ")*$")

		var domainPat=new RegExp("^" + atom + "(\\." + atom +")*$")

		var matchArray=emailStr.match(emailPat)
		if (matchArray==null)
		{
		 alert("Email address seems incorrect (check @ and .'s)")
		    return false
		}
		var user=matchArray[1]
		var domain=matchArray[2]

		if (user.match(userPat)==null) 
		{
			// user is not valid
			alert("The username doesn't seem to be valid.")
			return false
		}

		var IPArray=domain.match(ipDomainPat)
		if (IPArray!=null) 
		{
		// this is an IP address
			for (var i=1;i<=4;i++) 
			{
				if (IPArray[i]>255) 
				{
					alert("Destination IP address is invalid!")
					return false
				}
			}
			return true
		}

		var domainArray=domain.match(domainPat)
		if (domainArray==null) 
		{
			alert("The domain name doesn't seem to be valid.")
			return false
		}

		var atomPat=new RegExp(atom,"g")
		var domArr=domain.match(atomPat)
		var len=domArr.length
		if (domArr[domArr.length-1].length<2 || domArr[domArr.length-1].length>3) 
		{
			alert("The address must end in a three-letter domain, or two letter country.")
				return false
		}

		if (len<2)
		{
				var errStr="This address is missing a hostname!"
				alert(errStr)
				return false
		}

	    return true;
}//emailcheck