// show search map 

function showMap(target){
	
	if (document.getElementById){
	var myMap = document.getElementById( "map" );
	var myPost = document.getElementById( "post" );
	var myPostcode = document.getElementById( "ppostcode" );
	var myMapVar = document.getElementById( "allLoc" );

		if (target == "map"){
			myMap.style.display = "";
			myPost.style.display = "none";
			myPostcode.value = "";
		} else if (target == "post") {
			myMap.style.display = "none";
			myPost.style.display = "";
			myMapVar.checked = false;
			allMap();
		}
	}
}

function swapMap(targ){
	
	if (document.getElementById){
	var propMap = document.getElementById( "mapimages" );
	var propImg = document.getElementById( "propimages" );
	var propMapOption = document.getElementById( "mapOption" );
	var propImgOption = document.getElementById( "imagesOption" );

		if (targ == "images"){
			propMap.style.display = "none";
			propImg.style.display = "";
			propMapOption.style.display = "";
			propImgOption.style.display = "none";
		} else if (targ == "map") {
			propMap.style.display = "";
			propImg.style.display = "none";
			propMapOption.style.display = "none";
			propImgOption.style.display = "";
		}
	}
}

// zoom swap

function zoom(zoomId){
	
	if (document.getElementById){
	
		for (i=1;i<6;i++) {
			var varZoom = "zoom" + i;
			if (zoomId == varZoom){
				document.getElementById(zoomId).src = "images/i_map_on.gif"
			} else {
				document.getElementById(varZoom).src = "images/i_map_off.gif"
			}
		}
	}
}


// tick all map boxes

function allMap () {
	
	form=document.forms['searchForm'];

	if (form.allLoc.checked) {
		for (loop=0;loop<form.mapVar.length;loop++) {
			form.mapVar[loop].checked = true;
		}
	} else {
		for (loop=0;loop<form.mapVar.length;loop++) {
			form.mapVar[loop].checked = false;
		}
	}
}

// toggle visibility 

function toggle( targetId){
	
  if (document.getElementById){
	  
  	var target = document.getElementById( targetId);
	var fl = document.getElementById( "formLink");
		
  		if (target.style.display == "none"){
  			target.style.display = "";
			fl.style.display = "none";
  		} else {
  			target.style.display = "none";
			fl.style.display = "";
  		}
  	}
}