//----------------Email validation------------------------------
	function validateEmail(email)
	{
		charList="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz1234567890_@.-"
		var flag = 1;
		var noOfAts  = 0;
		var noOfDots = 0;
		if((email.value.charAt(0) == "_") || (email.value.charAt(0) == ".") || (email.value.charAt(0) == "@")|| (email.value.charAt(0) == "-") )
		{
			flag = 0
		}
		for(i=0;i<email.value.length;i++)
		{
			if(charList.indexOf(email.value.charAt(i))==-1)
			{
				flag = 0;
				break;
			}
			if(email.value.charAt(i) == "@" )
			{
				if(charList.indexOf(email.value.charAt(i+1))!=-1)
					noOfAts++;
			}	
			if(email.value.charAt(i) == "." )
			{
				if((email.value.charAt(i-1) == "@") || (email.value.charAt(i-1) == ".") || ((i+1) == email.value.length))
				{
					flag = 0
					break
				}
				if(noOfAts == 0)
				{
					flag = 0
					break
				}
				noOfDots++;	
			}	
			if(noOfAts > 1)	
			{
				flag = 0;
				break;
			}
		}
		if(noOfDots == 0)
			flag = 0;
		if(noOfAts == 0)
			flag = 0;	
		if(flag == 1)
		{
			return true;
		}
		else
		{
			return false;
		}
	}