var listArray = new Array( );

function checkNumber(evt) {
	var charCode = (evt.which) ? evt.which : event.keyCode
	if (charCode > 31 && (charCode < 48 || charCode > 57)) {
		alert("Please make sure entries are numbers only.")
		return false;
	}
	return true;
};

function cli()
{

list=document.userinfo.major_radio;
if(list.options[list.selectedIndex].value=="سایر")
{
		document.userinfo.major.disabled=false;
		document.userinfo.major.select();
		document.userinfo.major.focus();
	}
	else{
		document.userinfo.major.disabled=true;
	}
};

function occ()
{
	enable_disable("B");
	if(document.userinfo.occu_radio[3].checked==true){
		document.userinfo.occu.disabled=false;
		document.userinfo.occu.select();
		document.userinfo.occu.focus();
	}
	else{
		document.userinfo.occu.disabled=true;
	}
	if(document.userinfo.occu_radio[3].checked==true || document.userinfo.occu_radio[1].checked==true){
		document.userinfo.khab[0].disabled=true;
		
	}
	else{
        document.userinfo.khab[0].disabled=false;
		
	}
	

};
function member(){
	enable_disable("C");
	if(document.userinfo.mem[0].checked==true){
		document.userinfo.mem_no.disabled=false;
		document.userinfo.mem_no.select();
		document.userinfo.mem_no.focus();
	}
	else{
		document.userinfo.mem_no.disabled=true;
	}
	
};
function hasPaper(){

	if(document.userinfo.has_paper[0].checked==true){
		enable_disable("D");
		document.userinfo.paperCode.disabled=false;
		document.userinfo.paperCode.select();
		document.userinfo.paperCode.focus();
		document.userinfo.era[0].disabled=false;
		document.userinfo.era[1].disabled=false;
	}
	else{
		enable_disable("D");
		enable_disable("E");
		document.userinfo.paperCode.disabled=true;
		document.userinfo.era[0].disabled=true;
		document.userinfo.era[1].disabled=true;
		document.userinfo.eraCode.disabled=true;
	}
	
};
function er()
{
	enable_disable("E");
	if(document.userinfo.era[0].checked==true){
		document.userinfo.eraCode.disabled=false;
		document.userinfo.eraCode.select();
		document.userinfo.eraCode.focus();
		
	}
	else{
		document.userinfo.eraCode.disabled=true;
		
	}
	
}
function enable_disable(Name)
{

	c=0;
	for (var i = 0; i < listArray.length; i++) {
		if(listArray[i]==Name){
			c=1;
		}
	}
	if(c==0)
	{	
		listArray[listArray.length] = Name;
				
	}
	listArray.sort();
	str=listArray.join(",");
	
	if(str=="A,B,C,D,E,F,G")
	{
		document.userinfo.submit.disabled=false;
	}
}