function Search(num){

		var frm	=	document.forms[parseInt(num)];
		var kw1	=	Trim(frm.keyword.value);
		var kw2	=	Trim(frm.catname.value);
		var kw3	=	Trim(frm.location.value);
		if(!Len2(kw1)&&!Len2(kw2)&&!Len2(kw3)){
				alert("Ban phai nhap vao tu khoa de tim kiem.\nTu khoa phai tu 2 ky tu tro len!");
		}else{
			frm.submit();
		}
	
}
function Trim(val){
		var len  =  val.length;
		while(val.substr(0,1)==' '){
			val  =  val.substr(1,len-1);
			len--;
		}
		while(val.substr(len-1,1)==' '){
			val  =  val.substr(0,len-1);
			len--;
		}
		return val;
}
function Len2(str){
		return (str.length>=2)?true:false;
}
function Enter(num){
	if(event.keyCode==13){
			switch(num){
					case '0':
						eval(Search('0'));
						break;
					case '1':
						eval(Search('1'));
						break;
					case '2':
						eval(Search('2'));
						break;
			}
	}
}
function HeightCompList(){
		var h1=div_left.clientHeight;
		div_right.style.height=h1;
}