function Trim(str)
			{
				while(str.charAt(0) == (" ") )
				{
					str = str.substring(1);
				}
				while(str.charAt(str.length-1) == " " )
				{
					str = str.substring(0,str.length-1);
				}
				return str;
			}
function validate()
    	{
/*************************validation for UserID************************/
	          
    			if(Trim(document.registration.UserId.value)=="")
    			{
    			alert("Please enter userid");
    				document.registration.UserId.focus();
					document.registration.UserId.style.backgroundColor="#DDF9FF";
					return false;
    			}
                        if(document.registration.UserId.value.length<4)
			{
				alert("Please enter valid userid");
				document.registration.UserId.focus();
				document.registration.UserId.style.backgroundColor="#DDF9FF";
				return false;
			}
/************************validation for password***************************/
			if(Trim(document.registration.Password.value)=="")
    			{
    			alert("Please enter password");
    				document.registration.Password.focus();
					document.registration.Password.style.backgroundColor="#DDF9FF";
					return false;
    			}
			
                        if(document.registration.Password.value.length<4)
			{
				alert("Please enter valid password");
				document.registration.Password.focus();
				document.registration.Password.style.backgroundColor="#DDF9FF";
				return false;
			}
            return true;
    		}