// JavaScript Document

<!--[if IE]>
document.getElementById=function(str){
str=new String(str);
var allEls=document.getElementsByTagName("*"),l=allEls.length;
for(var i=0;i<l;i++)if(allEls[i].id==str || allEls[i].getAttribute("id")==str)return allEls[i];
return null;
} 

document.getElementsByName=function(str){
str=new String(str);
var myMatches=new Array();
var allEls=document.getElementsByTagName("*"),l=allEls.length;
for(var i=0;i<l;i++)if(allEls[i].name==str || allEls[i].getAttribute("name")==str)myMatches[myMatches.length]=allEls[i];
return myMatches;
}
<!--[endif]--> 

function addDelRow(action){
	
	var changeArea = document.getElementById("candidate_industries");
	var allInputs = changeArea.getElementsByTagName("select");
	
	//find number of input fields
	var numRows = changeArea.getElementsByTagName('tr').length - 1;
	var allRows = changeArea.getElementsByTagName('tr');
	var addImg = document.getElementById('addRow');
	var removeImg = document.getElementById('removeRow');
	var numChanged = 0;
	var n = 0; // number of rows
	var d = 0; // 
	
	if (action == "add") {
		for (var i=1; i<=numRows; i++) {
			if (allRows.item(i).style.display == 'none') {
				//Current row is not displayed so display it if no rows have been changed yet
				if (numChanged == 0) {
					allRows.item(i).style.display = '';
					numChanged++;
				}
			} else {
				//increase number of displayed by 1
				d++;	
			}
			n++;
		}
		
		if (d >= n-1) {
			addImg.src = 'http://www.serlimited.com/images/spacer.gif';
		}
		
		//if more than one row displayed show remove item image
		if (d >= 1) {
			removeImg.src = 'http://www.serlimited.com/images/contract.jpg';	
		}
		
	} else if (action == "del") {
		
		var nd = 0;
		
		for (var i=1; i<=numRows; i++) {
			if (allRows.item(i).style.display == '') {
				d++;
			} else {
				nd ++;
			}
			
		}
		
		// delete row if its not the first
		if ((d > 1) && (d <= numRows)) {
			allRows.item(d-1).style.display = "none";
			//reset input field
			allInputs.item(d-1).options[0].selected = true;		
		}

		// replace add image if less than maximum number of rows displayed
		if (d-1 < numRows) {
			addImg.src = 'http://www.serlimited.com/images/expand.jpg';	
		}
		
		if (d == 2) {
			removeImg.src = 'http://www.serlimited.com/images/spacer.gif';	
		}
		
		
	}
	
	//If no rows have been made visable they must all be visible
	//so must make last one hidden

	
}

function check_radius_size_js() {
 //Checks that the radius field in forms is between 5 and 250
	
 //var r = parseInt(radius);
 var r = document.jobsearch_form.radius.value;
 if (r>250) {return 0;}
 if (r<5) {return 0;}
 return 1;
}

function removeElement(id)	{
	var Node = document.getElementById(id);
	Node.parentNode.removeChild(Node);
}

function checkJobId(id) {
	//checks id is in correct format	
	var pattern = /^[0-9]{1,8}$/;
	if (pattern.test(id)) {
		return 1;	
	}
	return 0;
}

function jsUpload(upload_field)
{
	// this is the main cv upload function
	// if you do not need extension checking, remove 
	// everything down to line
	// upload_field.form.submit();

	var re_text = /\.txt|\.doc/i;
	var filename = upload_field.value;

	/* Checking file type */
	if (filename.search(re_text) == -1)
	{
		alert("File does not have text(txt, xml, zip) extension");
		upload_field.form.reset();
		return false;
	}

	upload_field.form.submit();
	document.getElementById('upload_status').value = "uploading file...";
	upload_field.disabled = true;
	return true;
}

function cookieVal(cookieName) {
	//Get value of cookie cookieName
	
	var thisCookie = document.cookie.split("; ");
	
	for(var i=0; i<thisCookie.length; i++) {
		//for each seperate cookie if the name matches our cookie
		// output cookie value
		if (cookieName == thisCookie[i].split("=")[0]) {
			return thisCookie[i].split("=")[1];
		}
	}
	
	// if not return o
	return 0;
	
}

function updateRecentViewedCookie(id) {
	// creates/updates recentViewed cookie to add job to recently viewed list
	// Value of cookie in format id,id,id,id,id,id,id, so can be split into array
	// limit to last 10 jobs
	var recentViewed = cookieVal("recentViewed");
	
	//set expiry date as six months
	var expireDate = new Date();
	expireDate.setMonth(expireDate.getMonth()+6);
	
	// If not cookie not set add first entry
	if (recentViewed == 0) {
		
		recentViewed = id;
	
	} else { // if cookie already set
	
		//check if has more than one id
		if (recentViewed.match(",")) {
			//if it does
			
			// turn into array
			recentViewed = recentViewed.split(",");
			
			//check if the job_id is already in recentViewed
			for(var i=0; i<recentViewed.length; i++) {
				if (id == recentViewed[i]) {//if id in array
					//remove it from list
					recentViewed.splice(i,1);
				}
			}	
			
			recentViewed.unshift(id)
			//update recentViewed as not already in array
			//while number of elements greater than nine
			while (recentViewed.length > 10) {
				// remove last element of array
				recentViewed.pop();	
			}
				
			//convert back to string
			recentViewed.join(",");
		
		} else {
			
			if (recentViewed != id) { //if id is not equal to recentViewed
				//add id, to beginning of string
				recentViewed = id + "," + recentViewed;
			}
		}
	}
	
	//create/update cookie
	document.cookie = "recentViewed=" + recentViewed + ";expires=" + expireDate.toGMTString();
	
}// end of function updateRecentViewedCookie

function checkUncheckAll(theElement) {
     var theForm = theElement.form;
	 for(var z=0; z<theForm.length;z++){
     	if(theForm[z].type == 'checkbox' && theForm[z].name != 'checkall'){
		  theForm[z].checked = theElement.checked;
	 	}
     }
}

function checkUncheckClass(theElement, styleClass) {
     var theForm = theElement.form;
	 for(var z=0; z<theForm.length;z++){
     	if(theForm[z].type == 'checkbox' && theForm[z].name != 'checkall' && theForm[z].className == styleClass){
		  theForm[z].checked = theElement.checked;
	 	}
     }
}

function validatecandidateCategories() {
	
}