// JavaScript Document
function open_col(obj,col_id){
	if(obj.src.indexOf("outspread.gif")!=-1){
		obj.src=obj.src.replace("outspread.gif","shrink.gif");
		document.getElementById(col_id).style.display = "";
	}else if(obj.src.indexOf("shrink.gif")!=-1){
		obj.src=obj.src.replace("shrink.gif","outspread.gif");
		document.getElementById(col_id).style.display = "none";
	}
}