function showHid(obj){
	i=0;
	while(1){
		x = document.getElementById(obj+i);
		if(!x) break;
		if(x.style.display=='')
			x.style.display='none';
		else
			x.style.display='';
		i++;
	}
}
function SetShow(id)
{
	obj=document.getElementById(id);
	if(obj.style.visibility=="hidden")
		obj.style.visibility="visible";
	else
		obj.style.visibility="hidden";
}

function viewpic(src,No){
newpic=window.open(src,"","toolbar =no, menubar=no, scrollbars=no, resizable=no, location=no, status=no,top=0,left=0,width=645,height=485");
	if (document.all){
		newpic.moveTo(0,0);
	}
}

function addOption(objSelectNow,txt,val)
{
	var objOption = document.createElement("OPTION");
	objOption.text= txt;
	objOption.value=val;
	objSelectNow.options.add(objOption);
}
function addOptionGroup(selectId,optGroupString,sel)
{
	var ary = optGroupString.split("@");
	var optGroup = ary[0].split("^");
	var optVal = ary[1].split("^");

	var objSelect = document.getElementsByTagName("SELECT");
	var objSelectNow = objSelect[selectId];
	len=0;
	Index=0;
	if(objSelectNow.length) len=1;
	objSelectNow.length =len;
	newI=len;
	for (i=0; i<optGroup.length && optVal[i]!=''; i++)
	{
		if(selectId=="partgroup" ){
			if(sel_fag==1){
				tmp = optVal[i].substr(0,1);
				if(tmp<=3){
					addOption(objSelectNow, optGroup[i], optVal[i]);
					if(optVal[i] == sel){ 
						Index=newI;
					}else{newI++;}
				}
			}else if(sel_fag==2){
				tmp = optVal[i].substr(0,1);
				if(tmp>=4 && tmp <=7){
					addOption(objSelectNow, optGroup[i], optVal[i]);
					if(optVal[i] == sel){ 
						Index=newI;
					}else{newI++;}
				}
			}else{
				addOption(objSelectNow, optGroup[i], optVal[i]);
				if(optVal[i] == sel){ 
					Index=newI;
				}else{newI++;}
			}
		}else{
			addOption(objSelectNow, optGroup[i], optVal[i]);
			if(optVal[i] == sel){ 
				Index=newI;
			}else{newI++;}
		}
	}
	if(Index) objSelectNow.options[Index].selected=true;
}
function checkecm(select1,select2,select3)
{
var obj1=document.getElementById(select1);
var obj2=document.getElementById(select2);
var obj3=document.getElementById(select3);
	if(obj1.value!='') 
		{
		obj2.disabled=true;
		obj3.disabled=true;
		}
	else
		{
		obj2.disabled=false;
		obj3.disabled=false;
		}
}
function leftrest(){
	form_left.reset();	
	form_left.make.options[0].selected=true;
	form_left.partgroup.options[0].selected=true;
	form_left.mode.options[0].selected=true;
	form_left.engine.options[0].selected=true;
	form_left.chassis.options[0].selected=true;
	form_left.KeyWord.value='';
	form_left.partnumber.value='';
}