function replaceimg(){	
	var totalNum = 17;//the total number of images in a folder.
	var rndNum = Math.floor((Math.random() * (totalNum - 1)) + 1);
	document.getElementById("fakeback").innerHTML = "<img src='http://www.nexus.dk/fileadmin/templates-2010/backimg/" + rndNum  + ".jpg' width='100%' alt=''/>";
};

// jquery onFocus styling
$(document).ready(function() {
			$('input[id="searchText"]').addClass("idleField");
       		$('input[type="text"]').focus(function() {
       			$(this).removeClass("idleField").addClass("focusField");
    		    if (this.value == this.defaultValue){ 
    		    	this.value = '';
				}
				if(this.value != this.defaultValue){
	    			this.select();
	    		}
    		});
    		$('input[id="searchText"]').blur(function() {
    			$(this).removeClass("focusField").addClass("idleField");
    		    if ($.trim(this.value) == ''){
			    	this.value = (this.defaultValue ? this.defaultValue : '');
				}
    		});
		});