/* hides a div by its correspondent divPreloader CSS and then removes it */
function preloader(value, div, divPreloader, img, imgDiv, imgPath){
	if(value){
		if(img)
			ALERT.preloader.jQuery("#"+div).append("<div id='" + divPreloader + "'><div id='" + imgDiv + "'><img src='" + imgPath + "' title='' alt='' /></div></div>");
	  	else
			ALERT.preloader.jQuery("#"+div).append("<div id='" + divPreloader + "'></div>");	  		
 	}else{
 		if(img)
 			ALERT.preloader.jQuery("#"+imgDiv).remove();
		ALERT.preloader.jQuery("#"+divPreloader).remove();
	}
}

/* hides a div with an iframe and then removes it (IE6 fix) */
function preloaderIframe(value, div, divPreloader, img, imgDiv, imgPath, windowHeight){
	if(value){
		ALERT.preloader.jQuery("#"+div).append("<iframe id='" + divPreloader + "' style='height:" + windowHeight + ";' src='' frameBorder='0' scrolling='no'></iframe>");
		if(img)
			ALERT.preloader.jQuery("#"+div).append("<iframe id='" + imgDiv + "' src='" + imgPath + "' frameBorder='0' scrolling='no'></iframe>");
 	}else{
 		if(img)
			ALERT.preloader.jQuery("#"+imgDiv).remove();
 		ALERT.preloader.jQuery("#"+divPreloader).remove();
	}
}