function change(div_num)
{
for(i=1;i<=3;i++)
{
  if(i==div_num)
   {
     document.getElementById("body_"+i).style.display="";
	 document.getElementById("head_"+i).style.backgroundImage="url(deftempimg/sy_16.gif)";
	 document.getElementById("head_"+i).className="style01";
   }
  else
   {
     document.getElementById("body_"+i).style.display="none";
     document.getElementById("head_"+i).style.backgroundImage="url(deftempimg/sy_17.gif)";
     document.getElementById("head_"+i).className="style02";
   }
}
}
function cpcl(div_num)
{
for(i=1;i<=4 ;i++)
{
  if(i==div_num)
   {
     document.getElementById("body01_"+i).style.display="";
	 document.getElementById("head01_"+i).style.backgroundImage="url(deftempimg/sy_16.gif)";
	 document.getElementById("head01_"+i).className="style03";
   }
  else
   {
     document.getElementById("body01_"+i).style.display="none";
     document.getElementById("head01_"+i).style.backgroundImage="url(deftempimg/sy_17.gif)";
     document.getElementById("head01_"+i).className="style02";
   }
}
}
function xwsj(div_num)
{
for(i=1;i<=2;i++)
{
  if(i==div_num)
   {
     document.getElementById("body02_"+i).style.display="";
	 document.getElementById("head02_"+i).style.backgroundImage="url(deftempimg/sy_18.gif)";
	 document.getElementById("head02_"+i).className="style03";
   }
  else
   {
     document.getElementById("body02_"+i).style.display="none";
     document.getElementById("head02_"+i).style.backgroundImage="url(deftempimg/sy_19.gif)";
     document.getElementById("head02_"+i).className="style02";
   }
}
}
function gqxx(div_num)
{
for(i=1;i<=4;i++)
{
  if(i==div_num)
   {
     document.getElementById("body03_"+i).style.display="";
	 document.getElementById("head03_"+i).style.backgroundImage="url(deftempimg/sy_21.gif)";
	 document.getElementById("head03_"+i).className="style03";
   }
  else
   {
     document.getElementById("body03_"+i).style.display="none";
     document.getElementById("head03_"+i).style.backgroundImage="url(deftempimg/sy_20.gif)";
     document.getElementById("head03_"+i).className="style02";
   }
}
}
function glwxw(div_num)
{
for(i=1;i<=2;i++)
{
  if(i==div_num)
   {
     document.getElementById("body04_"+i).style.display="";
	 document.getElementById("head04_"+i).style.backgroundImage="url(deftempimg/sy_16.jpg)";
	 document.getElementById("head04_"+i).className="style03";
   }
  else
   {
     document.getElementById("body04_"+i).style.display="none";
     document.getElementById("head04_"+i).style.backgroundImage="url(deftempimg/sy_17.jpg)";
     document.getElementById("head04_"+i).className="style02";
   }
}
}

function clearField(field){
	if (field.value == field.defaultValue) {
		field.value = "";
	}
}
function checkField(field){
	if (!field.value) {
		field.value = field.defaultValue;
	}
}