var CSS_EVENT_SELECTOR_RULE=new Array(
"DIV.menu_top IMG:mouseover:hoverSrc"
,"DIV.menu_top IMG:mouseout:outSrc"
);
//example rule, like style sheet, each rule started with , except 1st rul
function hoverSrc(){
	this.setAttribute('_src',this.src);
	this.src=this.getAttribute('_src_hover');
}
function outSrc(){
	this.src=this.getAttribute('_src');
}