// JavaScript Document


function changeValue()
{
var count=0;
	for (i=0; i<document.form1.Course.length;i++)
	{
		if (document.form1.Course[i].selected)
		{
		count =count+1;
		
		}
	
	}
		if(count>4)
		{
			alert("You can not exceed four selections");
			document.forms[0].Course.focus();
		}
}