function checkSubmit(requiredfields,msg)
{
	invalid="";
	allvalid=true;
	for(i=0;i<requiredfields.length;i++)
	{
		input=document.getElementById(requiredfields[i]["id"]);
		valid=true;
		if(requiredfields[i]["type"]==1&&(input.value==null||input.value.length<=0))
			valid=false;
		if(requiredfields[i]["type"]==2&&(input.checked==null||!input.checked))
			valid=false;
		if(requiredfields[i]["type"]==3&&(input.selectedIndex==null||input.selectedIndex<0))
			valid=false;
		if(!valid){
			allvalid=false;
			if(invalid.length>0)invalid=invalid+", ";
			invalid=invalid+requiredfields[i]["msg"];
		}
	}
	if(allvalid)return true;
	alert(msg+invalid);
	return false;
}